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the solution:
4
3
7
9
5
2
6
8
1
8
9
2
4
6
1
3
5
7
5
1
6
7
3
8
4
2
9
1
8
3
2
7
6
9
4
5
7
6
4
8
9
5
2
1
3
2
5
9
1
4
3
7
6
8
6
7
8
5
2
9
1
3
4
3
4
1
6
8
7
5
9
2
9
2
5
3
1
4
8
7
6